Bring 4-5 quarts of water to a boil in a large saucepan or pot . Add ¼ cup salt.
Prep the broccolini: Trim off the very bottom of the broccolini stems (about ½-inch). Slice off the florets. Halve any florets that are bigger than 3 inches wide. Slice the stalks into approximately 1 ½-2-inch pieces.
Drop the broccolini into the boiling water and cook 2 minutes. Drain immediately, then transfer to a serving bowl.
Pour the olive oil over the broccolini and toss gently with tongs. Squeeze the lemon wedges over. Serve warm or at room temperature.
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Notes
To make ahead, cook, drain and immediately rinse under cold running water to preserve the color. Drain again and drizzle with olive oil. Store refrigerated up to 5 days.
When ready to cook, sauté the broccolini for a minute or two in olive oil.
Want to roast broccolini? After tossing with olive oil spread out on a sheet pan and roast at 450 degrees or under the broiler until the edges are slightly charred.